At Absolute Zero: Examining He Atom Universes

pivoxa15
Messages
2,250
Reaction score
1
If the universe consisted only of He atoms and all of them are in the ground state, does it imply this universe has 0 or close to 0 kelvin? It is only the deexcitation of the outer electron emitting a photon which can produce any significantly measurable heat in the universe?
 
Physics news on Phys.org
Maybe close to 0 kelvin, but never precisely. Laws of Thermodynamics and Heisenbergs Uncertainty Principle tell me that.

Of close we would have to take other things into account if we want more detailed approach, such as how a Universe Could only consist of He atoms when Hydrogen atoms are needed to form those. And that there should be other energy from certain interactions.
 
I am proposing a hypothetical universe which consists of only He atoms. However I like the physics between atoms to be the same as our universe.
 

Thread 'Schrödinger equation and classical wave equation'

Not an expert in QM. AFAIK, Schrödinger's equation is quite different from the classical wave equation. The former is an equation for the dynamics of the state of a (quantum?) system, the latter is an equation for the dynamics of a (classical) degree of freedom. As a matter of fact, Schrödinger's equation is first order in time derivatives, while the classical wave equation is second order. But, AFAIK, Schrödinger's equation is a wave equation; only its interpretation makes it non-classical...
View full post »

Thread 'Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
View full post »

Thread 'Is Maxwell's electromagnetism an effective (field) theory?'

Is it possible, and fruitful, to use certain conceptual and technical tools from effective field theory (coarse-graining/integrating-out, power-counting, matching, RG) to think about the relationship between the fundamental (quantum) and the emergent (classical), both to account for the quasi-autonomy of the classical level and to quantify residual quantum corrections? By “emergent,” I mean the following: after integrating out fast/irrelevant quantum degrees of freedom (high-energy modes...
View full post »

Similar threads

I Can Quantum Effects Prevent Reaching Absolute Zero?
Replies
3
Views
1K
B Superposition at absolute zero
Replies
1
Views
2K
I What are the implications of this "Negative Time Experiment"?
Replies
19
Views
2K
I Do atoms recoil when emitting a photon?
Replies
38
Views
6K
I Why is the SE better than the KG equation for a hydrogen atom?
Replies
18
Views
3K
I Are all processes CPT symmetric like measurement, stimulated emission?
Replies
8
Views
2K
I Photon absorption for an atomic electron
Replies
47
Views
4K
I General solution of the hydrogen atom Schrödinger equation
Replies
9
Views
3K
I Have You Heard of the SEW Experiment? Thoughts?
Replies
3
Views
2K
B Thought experiment: Beyond the slowest measurable speed?
Replies
20
Views
1K

Hot Threads

Recent Insights

Back
Top